Lens drive device, auto-focusing camera and mobile terminal device with camera

Abstract

The invention provides a lens drive device, an auto-focusing camera and a mobile terminal device with the camera. The lens drive device provided by the invention comprises a moving body, a fixed body which accommodates the moving body on the inner peripheral side, a drive part which belongs to at least one of the moving body or the fixed body and produces a drive force to drive the moving body to move, and an elastic supporting body which elastically supports the moving body relative to the fixed body. The elastic supporting body comprises a fixed body side part which is fixed on the fixed body, a moving body side part which is fixed on the moving body, and a fine-plate-shaped wrist part which connects the fixed body side part and the moving body side part. The elastic supporting body is a plate-shaped body which uses the thickness direction as the direction of an optical axis. According to the wrist part, the size in the width direction is greater than the size in the thickness direction, and a reversing part is comprised. The reversing part comprises a bent part which is bent and is vertically arranged in the direction of the optical axis along a curved line which passes through a reversing start part and a reversing end part. The elastic supporting body can powerfully reduce characteristic deviation produced by shock and vibration.

Description

technical field [0001] The present invention relates to a lens driving device, an auto-focus camera device equipped with the lens driving device, and a mobile terminal device with a camera equipped with the auto-focus camera. Background technique [0002] A conventional lens driving device has: a lens support body supporting the lens; a ring coil mounted on the lens support body; a magnet and a ring mouth that apply a radially distributed magnetic field to the coil. The elastic supporting body of the lens supporting body is movably supported on the upper and lower fixing members. This elastic supporting body has a fixed body side fixed to the upper and lower parts, a moving body side fixed to the lens support, and an arm connecting the fixed body side and the moving body side. For example, such a lens driving device is disclosed in JP-A-2007-72272. [0003] If an external force such as shock and vibration is applied to the direction perpendicular to the optical axis of the...

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Problems solved by technology

[0004] However, in the thickness direction of the connecting piece, once the bending is processed into a wave form, as long as there is a small deviation in the processing of the wave form, the spring characteristics of the elastic support body will have a large deviation. difficult question

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